You said that the reason people think evocation blocks are weak is an error in their approach to gaming. That's pretty dismissive.
Apologies, then. More I meant they were making a very narrow argument--saying that the blocks are weak in the situation of only blocking yourself when the enemies are apparently aware of all the in-game math and acting in perfect concert accordingly, which really isn't how either side of the fight would realistically act.
The issue here is not a misunderstanding.
I just have little tolerance for "if you were a roleplayer and not a rollplayer, you wouldn't be having this problem" and everything like it.
Real quick, what
does the "r" in "DFRPG" stand for again?
I'm saying that roleplaying should be
as much of a concern as rolling dice. For characters and the GM. You wouldn't let your players capitalize on knowledge they have but that the characters couldn't, right? So why should their opposition get that benefit?
And having vampires not attack somebody they don't think they can hurt makes perfect sense.
And how, pray tell, can the vampires tell that they won't be able to hurt someone? A vampire during melee isn't going to think, "Okay, that's a 6-shift block, and my Fists skill is only 3, so statistically speaking I have very little chance of getting through it." A vampire during melee is thinking, "If I smack it hard enough, I can get through that wimpy wizard's shield!"
As you yourself have said numerous times, the mechanics are an abstract--Harry throwing up a 4-shift shield probably looks almost exactly the same as Harry putting up an 8-shift shield. So how, exactly, are the non-mage members of the opposition exactly calculating his spell power in such a way as to predict who they have a reasonable chance of attacking? A vampire, untrained in magic, shouldn't have any idea of a shield's strength until he's tried to get through it.